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-rw-r--r--src/syssignal.h5
1 files changed, 4 insertions, 1 deletions
diff --git a/src/syssignal.h b/src/syssignal.h
index 6a5cd39bde9..43e8847cea5 100644
--- a/src/syssignal.h
+++ b/src/syssignal.h
@@ -146,7 +146,10 @@ extern SIGMASKTYPE sigprocmask_set;
#undef SIGINFO
#endif
#if defined (SIGIO) && defined (BROKEN_SIGIO)
-#undef SIGIO
+# undef SIGIO
+# if defined (__Lynx__)
+# undef SIGPOLL /* Defined as SIGIO on LynxOS */
+# endif
#endif
#if defined (SIGPOLL) && defined (BROKEN_SIGPOLL)
#undef SIGPOLL